CN102481653B - For the accessory power supply supply of welding machine - Google Patents
For the accessory power supply supply of welding machine Download PDFInfo
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- CN102481653B CN102481653B CN201080039161.1A CN201080039161A CN102481653B CN 102481653 B CN102481653 B CN 102481653B CN 201080039161 A CN201080039161 A CN 201080039161A CN 102481653 B CN102481653 B CN 102481653B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Inverter Devices (AREA)
- Arc Welding Control (AREA)
Abstract
Provide the electric welding machine (100) and the method for controlling the auxiliary power output on welding machine with auxiliary power output.In one embodiment, system comprises main transformer (130), described main transformer have with first secondary windings (140) of bonding machine power take-off (165) circuit communication and with the second subprime winding (145) of accessory power supply supply circuit communication with auxiliary power output.Described accessory power supply supply comprises the input (180) whether connected to judge described bonding machine power take-off for monitoring described bonding machine power take-off; For judge described auxiliary power output demand in whether there is the circuit (250) of surge or spike; And if meet specified conditions, limit the circuit of the available horsepower of described auxiliary power output.One method comprises: the demand of monitoring auxiliary power output; Monitoring bonding power output; Judge the spike whether existed in the demand of described auxiliary power output more than the first limit value; And if described spike exceedes described first limit value and described bonding power output is endowed energy, then reduce the available horsepower of described auxiliary power output.
Description
Technical field
Embodiment of the present invention relate generally to welding machine (welding machine), more specifically, relate to the method exported for the accessory power supply supply of welding machine and the auxiliary power for controlling on welding machine.
Background technology
Arc welding machine (welder) is for the country outside numerous industry, Small shop and the U.S., and these places can have different power available.Such power supply can be in the scope of 200VAC to 600VAC, can have the frequency of 50Hz or 60Hz, and can be three-phase or single-phase.Lincoln Electric (Lincoln Electric) company has developed the novel three stage power source for arc welding machine, and it makes welding function work together with any one in these power supplys.Usually, the electric tool that operator works under needing to be used in 115VAC or other devices, and such power supply is disabled.
Summary of the invention
The invention provides the electric welding machine with accessory power supply supply.In one embodiment, if there is the surge (surge) or spike (spike) that exceed setting limit value in current drain (current draw), then the available horsepower of accessory power supply supply is limited.In one embodiment, have two to increase sharply or spike limit value, if bonding machine output is connected, lower (lower) spike limit value triggers the action reducing available horsepower, if bonding machine output disconnects, higher (higher) spike limit value triggers the action reducing available horsepower.In one embodiment, electric welding machine comprises for receiving about 200 volts of inputs to the voltage of 600 volts of AC.Described input and AC-DC converter, inverter and main transformer circuit communication, described main transformer provides the isolation with described input.Main transformer comprise with the first secondary windings of bonding machine power take-off circuit communication and with the second subprime winding of accessory power supply supply circuit communication with auxiliary power output.Described accessory power supply supply comprises for monitoring bonding machine power take-off with the input judging described bonding machine power take-off and whether connect, for providing the pulse width modulation circuit of Puled input and the input for the output of monitoring described auxiliary power output to wave filter.The Puled input being input to wave filter provides maximum available auxiliary power to export under normal operation, and if auxiliary power exports existence surge or spike then reduces the output of available auxiliary power.
In another embodiment, electric welding facility have at least one transformer, and the source of welding current supply that at least one transformer described is used for having welding output provides the AC voltage of the first reduction and provides the AC voltage of the second reduction to the accessory power supply supply with auxiliary output terminal.Accessory power supply supply can comprise: rectifier, and the AC voltage transitions that described rectifier is used for described second reduces becomes D/C voltage; Switch, described switch for adopting intermittent mode to provide positive D/C voltage to the first filter input end (inductor such as (e.g.) LC wave filter) and providing negative D/C voltage to the second filter input end (capacitor such as (e.g.) LC wave filter), and for adopting intermittent mode to provide negative D/C voltage to the first filter input end and providing positive D/C voltage to the second filter input end.Accessory power supply supply can comprise control circuit, and described control circuit is being greater than the operation at frequencies of about 20kHz, for pulse operation (pulsing) switch, to provide variable pulse width to wave filter.When applying the first pulse width to wave filter, wave filter provides has the output of roughly sine-shaped AC power supplies.
In one embodiment, the method for controlling the auxiliary power output on welding machine is provided.Described method comprises: the demand of monitoring auxiliary power output; Monitoring bonding power output; Judge the spike whether existed in the demand of auxiliary power output more than the first limit value; And if spike is more than the first limit value and bonding power output is endowed energy (energized), then reduce the available horsepower of auxiliary power output.
Other embodiments of the present invention and feature is defined in specification, drawings and the claims.
Accompanying drawing explanation
By referring to below in conjunction with the description of the drawings, these and other features of the present invention can be realized and the present invention is more fully understood, wherein:
Fig. 1 is the block diagram of the bonding machine according to embodiments of the present invention with accessory power supply supply;
Fig. 2 is according to embodiments of the present invention for the block diagram of the accessory power supply supply of bonding machine;
Fig. 3 is the exemplary diagram of the voltage signal be applied to according to embodiments of the present invention for the filter input end in the accessory power supply supply of bonding machine;
Fig. 4 is the exemplary diagram of the output voltage signal corresponding with the voltage signal of the filter input end in the accessory power supply supply being applied to Fig. 3;
Fig. 5 is the exemplary diagram of the voltage signal be applied to according to embodiments of the present invention for the wave filter in the accessory power supply supply of bonding machine;
Fig. 6 is the exemplary diagram of the output voltage signal corresponding with the voltage signal of the filter input end in the accessory power supply supply being applied to Fig. 5;
Fig. 7 is the exemplary diagram of the voltage signal be applied to according to embodiments of the present invention for the wave filter in the accessory power supply supply of bonding machine;
Fig. 8 is the exemplary diagram of the output voltage signal corresponding with the voltage signal of the filter input end in the accessory power supply supply being applied to Fig. 7; And
Fig. 9 is the exemplary process diagram of the logic chart of the embodiment picked according to the electric welding with accessory power supply supply;
Figure 10 is another exemplary process diagram of the logic chart of the embodiment picked according to the electric welding with accessory power supply supply.
Detailed description of the invention
Below comprise the definition to the whole open middle exemplary term used.The singulative of all terms and plural form all fall in respective implication.Except as otherwise noted, otherwise the form of the capitalization of all terms and non-capitalization all fall in respective implication.
Connectivity relationship as used in this article between " circuit communication (circuit communication) " indication device.Direct electricity, electromagnetism be connected with optics and indirectly electricity, electromagnetism is connected with optics is the example of circuit communication.If received by another device from the signal of a device, then these two device circuits are communicated with, and no matter whether described signal is changed by certain other devices.Such as, if the signal from a device is passed to another device, then circuit communications by the two kinds of devices separated with one or more in lower device: amplifier, wave filter, transformer, optical isolator, numeral or analogue buffer, analogue integrator, other electronic circuits, fiber optical transceiver or or even satellite, even if described signal is changed by middle device (one or more).As another example, if electromagnetic sensor is from a Signal reception electromagnetic radiation, then electromagnetic sensor and this signal are circuit communications.As last example, the two kinds of devices that still can both dock with one the 3rd device (such as CPU) that are not directly connected to each other are circuit communications.In addition, as used in this article, for the application, voltage and characterize the value of digitized voltage and be considered to be equivalent, thus term " voltage " refers to value in the processor of signal or characterization signal or value in the processor determined according to the value of characterization signal as used in this article.
" signal " includes, but is not limited to the one or more of signal of telecommunication, analog or digital signal, one or more computer instruction, position or bit stream etc. as used in this article.
Include, but is not limited to " logic " of " circuit " synonym as used in this article for the hardware of n-back test (one or more) or action (one or more), firmware, software and/or its combine.Such as, based on required application or needs, logic can comprise microprocessor by software control or microcontroller, discrete logic (e.g., special IC (ASIC)) or other PLDs.Logic can also be fully embodied as software.The circuit identified herein and describe can have the multiple difference structure performing required function.
The value identified in a specific embodiment is exemplary and is need to determine according to the design of specific weld machine.Therefore, open and claimed the present invention conceives the scope be not limited to for the particular value or value describing embodiment disclosed herein herein.
Fig. 1 is the block diagram of the embodiment of the bonding machine 100 with accessory power supply supply 170 according to one embodiment of the invention.Bonding machine 100 can comprise AC-DC converter 110, and AC-DC converter 110 comprises the input 105 for receiving AC power supplies.AC-DC converter 110 is configured to receive " general " voltage, such as (e.g.) scope from about 200VAC to the voltage of about 600VAC and can be the voltage of three-phase or single-phase 50Hz or 60Hz.The output of AC-DC converter 110 and DC bus 115 circuit communication, preferably, provide the output of about 400VDC, and DC bus 115 and inverter 120 circuit communication.Inverter 120 converts 400VDC signal to 400VAC, 50kHz signal, primary winding 135 circuit communication in described 400VAC, 50kHz signal and main power source supply transformer 130.Main power source supply transformer 130 has the secondary windings 140 with rectifier 162 circuit communication in source of welding current supply 160.The ratio of primary winding 135 and secondary windings 140 can be 4: 1.Therefore, 400VAC, 50kHz input signal being input to main power source supply transformer 130 is converted into 100VAC, 50kHz of the rectifier 162 being input to source of welding current supply 160.As for the extraneous information of the exemplary about foregoing circuit, be disclosed as the U.S. and disclose No.2006/0213890 see submission on March 24th, 2005, on September 28th, 2006, authorize the U.S. Patent application No.11/087179 of Lincoln Global Co., Ltd, the full text of this U.S. Patent application is merged in herein with way of reference.This is an example in operable numerous different source of welding current supply.The present invention's design disclosed herein is not limited to the welding machine with universal input voltage.
Main power source supply transformer 130 comprises another secondary windings 145 with rectifier 205 (Fig. 2) circuit communication in accessory power supply supply 170.The ratio of primary winding 135 and secondary windings 145 can be 2: 1.Therefore, the 400VAC being input to main power source supply transformer 130 is converted into 200VAC, 50kHz of the rectifier 205 be input in accessory power supply supply 170.No matter whether bonding machine output 165 is switched on or switched off, and when bonding machine is energized, main power source supply transformer 130 is endowed energy.Therefore, when bonding machine 100 is energized, the power of accessory power supply supply 170 is available always.Extra secondary windings 145 does not need extra transformer, and can be added in all welding machines by this winding with few cost, and no matter whether final client has customized optional auxiliary power output.Another advantage of this embodiment is, the former bus of main transformer is independent of the input voltage 105 of bonding machine 100, and therefore secondary windings 145 is also independent of input voltage 105.Thus, the different range for voltage input 105 is not needed to reconnect or change the setting on accessory power supply supply 170.Accessory power supply supply 170 can be supplied as the option on welding machine 100, and in one embodiment, if former welding machine has extra secondary windings 145, then can be user installation accessory power supply supply 170 alternatively after initial purchase.But, alternatively, the second inverter and transformer (not shown) can be used to power for accessory power supply supply, and described second inverter and transformer can be connected to DC bus 115.
Fig. 2 illustrates the exemplary of accessory power supply supply 170.Accessory power supply supply 170 is configured to receive AC input, and such as (e.g.) above-mentioned 200VAC, 50kHz signal, rectifier 205 carries out rectification to this signal, thus obtains the output of about 200VDC.Just lead-in wire and bus 210a circuit communication that 200VDC exports and negatively to go between and bus 210b circuit communication.Bus 210a and paired interrupteur SW 1 and SW3 circuit communication and bus 210b and paired interrupteur SW 2 and SW4 circuit communication.The output of SW1 and SW4 and an input (such as (e.g.) the inductor 231) circuit communication of wave filter 230, and the second input of the output of SW2 and SW3 and wave filter 230 (such as (e.g.) capacitor 232) circuit communication.The control of interrupteur SW 1, the controlled circuit 250 of SW2, SW3 and SW4.Control circuit 250 also receives input signal 255 from filter output 240.Input signal 255 can be (such as) curtage signal.Input signal 255 provides feedback signal, described feedback signal may be used for determining in voltage, ripple (ripple), current drain (current draw) etc. one or more.In one embodiment, input signal is the analog voltage signal that the control circuit 250 monitoring output voltage and voltage ripple receives.
By the pulse on gating (gate) circuit 220a, 220b, 220c and 220d, take alternating sequence as interrupteur SW 1, SW2, SW3 and SW4 give energy.Control circuit 250 is with the switch of high frequency (such as (e.g.) about 20kHz or higher frequency (in one embodiment, about 75kHz)) " conducting " and "off" alternating pairs.Such as, control circuit 250 multiple pulses can operate " conducting " interrupteur SW 1 and SW2, to generate a series of positive voltage pulse, such as (e.g.) pulse 305 (Fig. 3), then control circuit 250 can by interrupteur SW 3 and SW4 pulse operation " conducting " a series of number of times, to generate a series of negative pulse, such as (e.g.) pulse 310.Repeating this process, thus generate a series of positive pulse, is then a series of negative pulses.In one embodiment, pulse width increases and reduces, and exports to generate illustrate illustrated in Fig. 4 roughly sinusoidal at least partly.Such as, pulse 305 and 310 can comprise one or more first pulse width 305a and 310a, one or more wider pulse width 305b and 310b and one or more the widest pulse width 305c and 310c respectively.Therefore, positive pulse width 305 corresponds to the sinusoidal waveform of Fig. 4, increases to 305b increase to 305c again and be decreased to 305b from 305c and be decreased to 305a again from 305a.Similarly, negative pulse width 305 corresponds to the sinusoidal waveform of Fig. 4, increases to 310b increase to 310c again and be decreased to 310b from 310c and be decreased to 310a again from 310a.(in order to for simplicity, only illustrate three different pulse widths, but, the different pulse widths of any requirement can be used).These voltage pulses are applied to the input of wave filter 230.Wave filter 230 comprises inductor 231 and capacitor 232, and therefore, the electric current of wave filter 230 and voltage export and can not change instantaneously.Therefore, the output of wave filter 230 is that the sine illustrated as illustrated in figure 4 exports.Can selective filter 230 parts, export to generate (such as) 115VAC, 60Hz.Preferably, described output has the minimum voltage ripple that (such as) is less than about 5% of total output voltage.Control circuit 250 uses input signal 255 to monitor the output 240 of accessory power supply supply 170, and the pulse operation of by-pass cock SW1, SW2, SW3 and SW4, export to keep substantially consistent sinusoidal 115VAC.The output 240 of wave filter 230 is communicated with the socket circuit be positioned on (such as) welding machine (not shown) backboard.
Preferably export with square wave and form the sine contrasted and export.Numerous electric tool more effectively operates voltage source with sinusoidal waveform, and when operating with sine wave, runs fiercer (run hotter).In addition, some equipment with square-wave waveform proper operation, cannot cause the radio of harmonic noise or TV, the electric tool with solid-state variable speed control, some battery chargers and fluorescent lamp such as (e.g.) square-wave voltage at all.
The main purpose that electric welding picks is to provide quality weld (weld).Due to accessory power supply supply 170 with weld output 165 and share former DC bus 115, therefore (such as) electric tool consumes too much electric current on accessory power supply supply 240, can reduce DC bus 115 and may affect welding output (if welding output is connected).Therefore, in one embodiment, control circuit 250 limit when bonding machine works output 240 can electric current.Whether control circuit 250 monitors bonding machine in work by signal 180.In one embodiment, when connecting bonding machine output 165, for signal 180 gives energy.Therefore, if control circuit 250 detects the voltage on signal 180, then bonding machine output connects.Available output current can be reduced by making the pulse width of the voltage being input to wave filter 230 narrow.Such as, Fig. 5 illustrates a series of positive voltage pulses 505 with the first pulse width.(in actual applications, pulse width 505 can comprise the multiple different pulse width exported for Aided Generation sine).At moment T1, bonding machine devote oneself to work and control circuit 250 by the narrowed width of pulse 510,511, thus restriction filter 230 input can electric current.At T2, bonding machine no longer works, its maximum and the width of pulse 506 broadens back by control circuit 250.Fig. 6 illustrates the output of the wave filter 230 corresponding with the input of wave filter 230.At T1, due to restriction output 240 can power or the comparatively narrow pulse width 510,511 of electric current, cause output voltage cut down (clipped) or reduce.At T2, pulse width 506 broadens, and therefore output voltage 240 turns back to maximum setting and waveform 610 recovers back roughly sinusoidal waveform.
In one embodiment, the demand spike in the voltage at output 240 place or (optionally) electric current monitored by control circuit 250.Some electric tools, have the peak operation current of 15 peaces such as (e.g.) mill, but can have the starting current more than 100 peaces in 100 milliseconds that start mill.The unexpected current drain in this auxiliary power output 240 place is by reduction DC bus 115 and can affect welding output 165 (if output 165 is connected).Control circuit 250 monitors voltage or the electric current at output 240 place, and limits available power by reducing pulse width fast, thus control circuit 250 1 detects the spike exceeding setting limit value, with regard to peak limiting electric current.In one embodiment, two or more spike limit values can be set.Such as, when bonding machine output is connected, the first spike limit value can be used, and when bonding machine power supply disconnects, the second spike limit value can be used.Interrupteur SW 1, SW2, SW3 and SW4 to exceed the frequency operation of about 20kHz, and can detect exceed setting limit value spike several microseconds in, based on the mode regulating impulse width of pulse one by one.The spike limit value of setting can be previously selected value, or can be programmable variable value, such as (e.g.) the percentage of maximum available power.
Fig. 7 illustrates the voltage pulse of the input end of wave filter 230.In this embodiment, because bonding machine is in work, so Voltage Pulse Width 705 is reduced.(when the initial reduction of bonding machine Voltage Pulse Width 705 is operationally optional, non-essential).At T3, operator carrys out starting drive with high starting current, e.g., and mill.Control circuit 250 detects high current drain or voltage drop, and because of interrupteur SW 1, SW2, SW3 and SW4 to exceed the frequency of about 20kHz by pulse operation, and in one embodiment, with the frequency of about 75kHz by pulsed operation, so control circuit 250 can detect and Limited Pulses width 710 in the severals microseconds detecting high current drain, and limit further output 240 can power.At moment T4, starting current reduces and pulse width 705,706 is turned back to the setting value of the reduction that bonding machine operationally uses by control circuit 250.Therefore, even if the device with high starting current is connected to auxiliary power output 240, usually also keep constant for welding the voltage output 165 provided.Fig. 8 illustrates the waveform at filter output 240 place.Because bonding machine is in work, so the crest voltage of waveform 800 is vised.Between T3 and T4, because pulse width 710 shortens, cause waveform 810 to be roughly linear, or there is minor swing (chop) on waveform.
The exemplary process diagram of the logic chart 900 of embodiment of the present invention is provided in Fig. 9.At block 905, bonding machine is connected to power supply unit and the connection of main bonding machine power supply.At block 910, accessory power supply supply output is with full power state ON.At block 915, determine whether " connection " bonding machine output (representing that bonding machine in use).If bonding machine output is not connected, then logic turn back to block 910 and auxiliary power output keep with full power state ON.Carry out another at block 915 to judge, judge that whether bonding machine output is connected.Alternatively, if connect bonding machine output, then now Voltage Pulse Width slightly can reduce (not shown).Generally, if connect bonding machine output, then judge whether there is spike in auxiliary power output demand at block 925.Such as, understand the initial start due to the large electric tool (such as (e.g.) mill) of starting current, cause spike.In block 925 if there is no spike, then again judge at block 915, judge whether bonding machine power take-off is connected.If bonding machine power take-off remains connection, then judge whether there is spike in auxiliary power output demand at block 925.If spike detected at block 925, then reduce Voltage Pulse Width at block 930.Control returns to block 925, determines whether still to there is spike and continues circulation, until no longer there is spike.Alternatively, described circulation can comprise and again judges whether bonding machine output is connected and whether still there is spike in auxiliary output demand.In addition, in an embodiment (not shown), if judge all to there is spike or spike exists the time limit value reaching setting block more than 935 time, then pulse width is reduced further.Other combinations of judgement and control impuls width can be used.
Another exemplary process diagram of the logic chart 1000 of embodiment of the present invention is provided in Figure 10.At block 1005, bonding machine is connected to power supply unit and connects main bonding machine power supply.In block 1010, accessory power supply supply output is with full power state ON.At block 1015, judge whether there is spike in auxiliary output demand.If no, then auxiliary power output keeps full power state.If spike detected at block 1015, then judge that whether bonding machine output is connected at block 1020.If bonding machine output is not connected, then judge whether spike exceedes the upper limit at block 1025.The described upper limit can be with at block 1015 for determining whether to occur the limit value that the limit value of spike is identical, but, preferably, the upper limit used at block 1025 is arranged detect limit value higher than the spike in block 1015, this is because bonding machine power take-off does not connect and input voltage slightly descends general who has surrendered to affect weld seam.If do not exceed the upper limit in block 1025 spike, then in block 1015, again judge whether there is spike in auxiliary power output demand.If exceed the upper limit in block 1025 spike, be then reduced to the pulse width of the first reduction in block 1030 pulse width, and judge whether still there is spike in auxiliary output demand at block 1015.If connected at block 1020 bonding machine output, be then reduced to the pulse width of the second reduction in block 1035 pulse width, and control to turn back to block 1015, judge whether there is spike in auxiliary power output demand.Preferably, the first pulse width reduced is more than or equal to the pulse width of the second reduction.Logic turns back to block 1015 and again determines whether to there is spike.
The order of the handling process described herein is not strict and can rearranges, thus still realizes same or similar result.In fact, according to the situation of authorizing or according to expectation, can be rearranged when realizing handling process described herein, being merged and/or being reorganized.
Although the enforcement in this article in conjunction with exemplary can describe and illustrate various inventive aspect of the present invention, design and feature, these various aspects, design and feature can be used in many replaceable embodiments individually or with its various combining form and sub-portfolio form.Unless specially got rid of in this article, otherwise all this kind of combining forms and sub-portfolio form are intended to be in scope of the present invention.Further, although can describe herein about of the present invention various in, design and feature-as, replaceable form of interchangeable material, structure, structure, method, circuit, device and assembly, software, hardware, control logic, formation, form, fit, and function etc.---various replaceable embodiment, but this class declaration is not intended to be the complete or detailed detail of feasible replaceable embodiment, no matter is known or Future Development at present.One or more in aspect of the present invention, design or feature easily can be used for other embodiments by those skilled in the art, and uses within the scope of the invention, even if clearly do not disclose such embodiment in this article.In addition, even if features more of the present invention, design or aspect can be described as preferred arrangements or method herein, this class declaration is not intended to imply that this feature is required or necessary, unless expressly stated.Further, exemplary or representational value and scope can be comprised, to contribute to understanding the disclosure; But this kind of value and scope will not understood with the implication of restriction and only just be intended to strict value or scope when clearly stating.In addition, although clearly can confirm that various aspect, characteristic sum concept are as invention of the present invention or forming section in this article, but this confirmation is not intended to be exclusiveness, but may exist herein completely describe and clearly do not confirmed as the aspect of the present invention of the part being such or specific invention, design and feature.The explanation of illustrative methods or process is not limited to comprise institute necessary in all cases in steps, or the order that presents of step be as required or the situation of necessity carry out understanding, unless expressly stated.
Reference number
Claims (14)
1. an electric welding machine, described electric welding machine comprises:
Main transformer, described main transformer provides the isolation with the power being input to described electric welding machine;
Described main transformer has the first secondary windings with bonding machine power take-off circuit communication; And
With the second subprime winding of accessory power supply supply circuit communication with auxiliary power output;
Described accessory power supply supply comprises:
For monitoring described bonding machine power take-off to judge the input whether described bonding machine power take-off is connected;
For monitoring the circuit of the output of described auxiliary power output; And
If the power demand of described auxiliary power output exists the surge and the connection of described bonding machine power take-off that exceed setting limit value, reduce the circuit of the available horsepower of described auxiliary power output;
Wherein, described circuit for the described available horsepower reducing described auxiliary power output comprises the pulse width modulation circuit for providing Puled input to wave filter, wherein, the width of described Puled input reduces, to reduce the described available horsepower of described auxiliary power output.
2. electric welding machine according to claim 1, wherein, described pulse width modulation circuit based on the mode of pulse one by one limit described accessory power supply supply output can described power, and/or wherein, described pulse width modulation circuit is with the frequency operation more than 20kHz.
3. electric welding machine according to claim 2, wherein, described frequency is 75kHz.
4., according to the electric welding machine described in claims 1 to 3, also comprise the circuit for regulating described pulse width to export to keep the sine of roughly 115 volts, 60Hz.
5., according to the electric welding machine described in claims 1 to 3, if also comprise in power demand the surge that exists more than the second setting limit value and described bonding machine power take-off disconnects, reduce the circuit of the described available horsepower of described auxiliary power output.
6. according to the electric welding machine described in claims 1 to 3, connect if also comprise described bonding machine output, and if initially reduce to there is the circuit that the surge exceeding described setting limit value then reduces the described power of described auxiliary power output further in the described available horsepower power demand of described auxiliary power output.
7., according to the electric welding machine described in claims 1 to 3, wherein, described accessory power supply supply comprises:
Rectifier, described rectifier is used for AC voltage transitions to become D/C voltage;
One or more first switch, one or more first switch described is for adopting intermittent mode to provide positive D/C voltage to the first filter input end and providing negative D/C voltage to the second filter input end; And
One or more second switch, one or more second switch described is for adopting intermittent mode to provide negative D/C voltage to described first filter input end and providing positive D/C voltage to described second filter input end;
Be greater than the circuit of operation at frequencies of 20kHz, described circuit is used for one or more first switch or one or more second switch described described in pulse operation, to provide variable pulse width to described wave filter;
Described wave filter provides has the output of roughly sine-shaped AC power supplies.
8., according to the electric welding machine described in claims 1 to 3, also comprise:
Be configured to receive the power input on the described welding machine of the main power voltage with 200 volts of AC to 600 volt AC;
The power input be communicated with AC-DC converter and inverter circuit, described inverter is powered to described main transformer.
9., according to the electric welding machine described in claims 1 to 3, described electric welding machine comprises:
For receiving the input unit of the power input range of 200 volts of AC to 600 volt AC;
With the input unit of the spacer assembly circuit communication for isolating an AC voltage;
A described AC voltage is reduced to the device of the first lower AC voltage and the second lower AC voltage;
For the device becoming welding to export described first lower AC voltage transitions;
For monitoring the device that described bonding machine exports;
The device of demand is exported for monitoring auxiliary power;
For described second lower AC voltage transitions being become the device of D/C voltage;
For converting described D/C voltage to a series of pulse and applying the device of described a series of pulse to wave filter, described wave filter has the output with auxiliary power output circuit communication;
For regulating the width of described pulse to provide the device of the first power stage when meeting first condition, wherein, described first power stage is roughly 115 volts of sinusoidal outputs; And
For regulating the width of described pulse to provide the device of the second power stage when meeting second condition, wherein, described second power stage is lower than described first power stage;
Wherein, described first condition comprises described bonding machine power take-off and disconnects and there is the surge exceeding setting limit value in the described demand of described auxiliary power output, and wherein, described second condition comprises the connection of described bonding machine power take-off and there is the surge exceeding setting limit value in the described demand of described auxiliary power output.
10. electric welding machine according to claim 9, wherein, described for regulating the device of the width of described pulse at the operation at frequencies more than 20kHz.
11. 1 kinds for controlling the method for the auxiliary power output on welding machine, described method comprises:
The demand of monitoring auxiliary power output;
Monitoring bonding power output;
Judge the spike whether existed in the demand of described auxiliary power output more than the first limit value;
If described spike exceedes described first limit value and described bonding power output is endowed energy, then reduce the available horsepower of described auxiliary power output; And
The described available horsepower of described auxiliary power output is reduced by the Voltage Pulse Width reducing output filter.
12. methods according to claim 11, also comprise in the demand judging described auxiliary power output the spike whether existed more than the second limit value, and if described spike exceedes described second limit value and described bonding power output is not endowed energy, then reduce described auxiliary power output can power.
13. methods according to claim 11 or 12, also comprise and keep the output of described auxiliary power output to be the sinusoidal waveform of roughly 115 volts, 60Hz.
14. according to the method described in claim 11 or 12, if the spike also comprised in the demand of described auxiliary power output exceedes the predetermined duration, then reduce the described available horsepower of described auxiliary power output further, and/or provide power from the first secondary windings to described bonding power output, and provide power from second subprime winding to described auxiliary power output, wherein, described first secondary windings and described second subprime winding are in same transformer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/552,782 | 2009-09-02 | ||
| US12/552,782 US8426772B2 (en) | 2009-09-02 | 2009-09-02 | Auxiliary power supply for a welding machine |
| PCT/IB2010/002172 WO2011027208A1 (en) | 2009-09-02 | 2010-09-02 | Auxiliary power supply for a welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102481653A CN102481653A (en) | 2012-05-30 |
| CN102481653B true CN102481653B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080039161.1A Active CN102481653B (en) | 2009-09-02 | 2010-09-02 | For the accessory power supply supply of welding machine |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US8426772B2 (en) |
| EP (1) | EP2461935B1 (en) |
| JP (2) | JP5453536B2 (en) |
| KR (2) | KR20140009602A (en) |
| CN (1) | CN102481653B (en) |
| BR (1) | BR112012004081A2 (en) |
| PL (1) | PL2461935T3 (en) |
| WO (1) | WO2011027208A1 (en) |
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| US9415459B2 (en) | 2012-04-06 | 2016-08-16 | Illinois Tool Works Inc. | Welding systems having non-contact temperature measurement systems |
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| US10369651B2 (en) * | 2013-03-15 | 2019-08-06 | Illinois Tool Works Inc. | Method and apparatus for providing welding-type power and auxiliary power |
| US9925613B2 (en) * | 2014-03-28 | 2018-03-27 | Hobart Brothers Company | Inverter-based generator and welding system |
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| US10486257B2 (en) * | 2014-11-07 | 2019-11-26 | Illinois Tool Works Inc. | Welding type power supply with transformer |
| US10406623B2 (en) * | 2014-11-07 | 2019-09-10 | Illinois Tool Works Inc. | Method and apparatus for providing auxiliary and welding type power with thermal protection |
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- 2010-09-02 PL PL10759982T patent/PL2461935T3/en unknown
- 2010-09-02 KR KR1020137033052A patent/KR20140009602A/en not_active Application Discontinuation
- 2010-09-02 WO PCT/IB2010/002172 patent/WO2011027208A1/en active Application Filing
- 2010-09-02 JP JP2012527400A patent/JP5453536B2/en active Active
- 2010-09-02 EP EP10759982A patent/EP2461935B1/en active Active
- 2010-09-02 KR KR1020127006586A patent/KR20120055679A/en not_active Application Discontinuation
- 2010-09-02 BR BR112012004081A patent/BR112012004081A2/en not_active IP Right Cessation
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2013
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20140009602A (en) | 2014-01-22 |
| US20130220986A1 (en) | 2013-08-29 |
| CN102481653A (en) | 2012-05-30 |
| JP2013503044A (en) | 2013-01-31 |
| JP5453536B2 (en) | 2014-03-26 |
| BR112012004081A2 (en) | 2019-09-24 |
| KR20120055679A (en) | 2012-05-31 |
| WO2011027208A1 (en) | 2011-03-10 |
| EP2461935A1 (en) | 2012-06-13 |
| PL2461935T3 (en) | 2013-04-30 |
| JP5828917B2 (en) | 2015-12-09 |
| EP2461935B1 (en) | 2012-11-14 |
| JP2014079165A (en) | 2014-05-01 |
| US20110049115A1 (en) | 2011-03-03 |
| US8426772B2 (en) | 2013-04-23 |
| US8704130B2 (en) | 2014-04-22 |
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